EXPLANATION OF PLATES I. AND II. 

 Plate I. 



Pig. 1. Skull as seen from the front. 

 Fig. 2. Skull as seen from the side. 



Plate II. 



Fig. 3. Skull as seen from above. 

 Fig. 4. Skull as seen from below. 



B. Basion. 



I. Inion, or external occipital protuberance. 

 O. Occipital point. 

 L. Lambda. 

 Ob. Obelion. 

 Bg. Bregma. 

 Op. Ophryon. 

 Gl. Glabella. 

 N. Nasion. 



S. Spinal point, or nasal spine. 

 A. Alveolar point. 

 St. Stephanion. 



Pt. Pterion, with epipteric bone. 

 As. Asterion. 

 Op. Opisthion. 

 G. Gouion. 

 St. St. Stephanie diameter. 

 F.F. Minimum frontal diameter. 

 E.E. External biorbital diameter. 

 J.J. Bijugal diameter. 

 Z.Z. Bizygomatic diameter. 

 Gl.O. Glabello-occipital length. 

 B.Bg. Basi-bregmatic height. 

 M.M. Maximum transverse diameter. 

 B.N. Basi-nasal length. 

 B.A. Basi-alveolar length. 

 N.S. Nasal height. 



